Jurnal Energi dan Teknologi Manufaktur (JETM)
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ANALISA PENGGUNAAN TRANSISTOR 2N3055 DAN TEC (THERMOELECTRIC COOLER) SEBAGAI BAHAN ALTERNATIF PANEL SEL SURYA (SOLAR CELL)
Full text linkThe renewable energy has a very important role in meeting energy needs. This is because the use of fuel for conventional power plants in the long term will deplete the dwindling resources of oil, gas and coal and can also cause environmental pollution. Solar panels based on 2N3055 transistors and Thermoelectric Cooler (TEC) are the basic materials for designing alternative power plants. In the manufacturing process, this solar panel utilizes electronic components that are capable of generating electrical energy (emf), so that it can be used as an appropriate technology to produce a solar panel that utilizes solar energy in the form of heat and solar radiation. The use of transistors 2N3055 and TEC proved to be more efficient in generating electrical energy, there was no significant decrease in voltage and current even though the weather was suddenly cloudy. The average voltage and current generated in this solar panel are 24.58 VDC and 2.72 Ampere DC
JIG AND FIXTURE PENGELASAN SUDUT SIKU UKURAN LEBAR PROFIL (3 - 60 mm) DI JURUSAN TEKNIK MESIN POLITEKNIK NEGERI MALANG
Full text linkThe resulting angle deviation is the result of improper welding methods, in addition, there is also a distortion factor in the workpiece during the SMAW welding process at the workshop in the Department of Mechanical Engineering, State Polytechnic of Malang.The purpose of making this tool is to facilitate and provide time efficiency in the welding process, it is necessary to manufacture jig and fixture tools in the angle welding process. The way the angle welding jig and fixture works is by gripping the workpiece to be welded in a plane that forms an angle so that the object to be welded will follow the angled plane
PENGARUH PENGATURAN KUAT ARUS DAN VOLTASE TERHADAP KEKUATAN TARIK PADA PENGELASAN BIMETAL PLAT BAJA KARBON RENDAH DAN STAINLESS STEEL 304 DENGAN LAS GMAW
Full text linkA manufactured product in the form of a mixture of dissimilar materials (bimetal) must be considered, including: selecting the right metal, selecting the appropriate filler, setting the current and voltage, etc. For this reason, research related to bimetallic welding using Gas Metal Arc Welding (GMAW) was conducted. The aims were to determine the effect of current on the tensile strength of bimetallic welding of low carbon steel and stainless steel 304 using GMAW welding, to determine the effect of voltage on the tensile strength of bimetallic welding, and to determine the effect of the interaction of current and voltage on the tensile strength of bimetallic welding using welding. GMAW. The research method used is experimental where the results of bimetallic welding are tested by the destructive test method. The results showed that current, voltage, and the strong interaction between current and voltage affect the tensile strength of bimetallic welding of low carbon steel and stainless steel 304 using GMAW welding. The use of amperes between 120A-160A and a voltage of 19V-22V gives a small difference and a tensile strength of 300 MPa-330 MPa
Analisis Laju Penurunan Temperatur di Dalam Ruangan Menggunakan AC Low Watt 0,5 HP
Full text linkHeat absorb ability split AC is the most important factor in the cooling speed on room temperature. The rate of temperature drop is determined by many factors, including compressor power. Nowadays, there are many Split AC are produced that have low power (low Watt), so that research is needed to determine the cooling speed in a room.
This study uses a low watt split AC with a power of 0.5 HP. The distance from the evaporator and the outside temperature are used as independent variables, while the rate of temperature reduction or cooling speed in the room is used as the dependent variable. The results showed that the distribution of room temperature and the rate of temperature reduction in the room varied based on the position of the distance to the location of the AC Split Low Watt. The lowest temperature and reduction rate in the room occurs at a distance of 2 m and 3 m in front of the AC location. The outside temperature or the temperature around the location of the AC condenser affects the temperature distribution at each distance in front of the AC. When the outside temperature is low, the temperature conditions at a distance of 1 m, 4 m, and 5 m have a significant difference. While the high outside temperature conditions, the temperature at a distance of 1 m, 4 m, and 5 m, namely the positions close to the wall, is almost the same.
Kata kunci: AC, split, low watt, evaporato
PENAMBAHAN SISTEM KOMPUTERISASI PADA UNIVERSAL TESTING MACHINE DI JURUSAN TEKNIK MESIN POLITEKNIK NEGERI MALANG
Full text linkRafik Djoenaidi, Andri Setiawan, Marthania Putri Indrayati ,. 2021. "Addition of Computerized Systems to Universal Testing Machines in the Department of Mechanical Engineering, State Polytechnic of Malang".
Tensile testing equipment is an educational laboratory facility that is very important in supporting and supporting the teaching and learning process in the laboratory, especially the Tensile testing machine in the Polynema Mechanical Engineering department still uses manual reading of test results, along with the development of technology, currently the Tensile testing machine will equipped with digitalization tools and integrated into the computer with data acquisition.
Tensile test equipment is an educational laboratory facility that is very important in supporting and supporting the teaching and learning process in the laboratory, especially the Tensile testing machine in the Polynema Mechanical Engineering department still uses reading test results manually, along with the development of technology, the current Tensile test machine will equipped with a digitizing device and integrated into a computer with data acquisition. The output of this tensile test is in the form of a tensile force table (F), elongation (ΔL), stress, strain and stress strain graph. The method for recording tensile force data (F) is done by connecting directly using a sonic scale type sp-320 and integrating it into a computer with data acquisition so that it can display a graph..
Keywords: Tensile test equipment, data acquisition, Sonic Scal
SIMULASI PENGARUH ORIENTASI SUDUT SERAT TERHADAP TEGANGAN TARIK LAMINATED COMPOSITE
Full text linkComposite is a material consisting of a mixture or combination of two or more materials, either micro or macro, where the properties of the material are different in shape and chemical composition from the original substance. In this study, the composite was tested to determine the tensile strength using simulation. Composite material modeling consists of carbon fiber as reinforcement and epoxy resin as the matrix. Then the composite material was given a uniaxial loading with a loading value of 50 N. By using variations in the orientation of the fiber angle 45ᵒ/90ᵒ/-45ᵒ, 45ᵒ/90ᵒ/-45ᵒ and 60ᵒ/45ᵒ/-60ᵒ. This study aimed to determine the effect of fiber angle orientation on tensile strength, maximum deformation and location of maximum stress on carbon fiber composites. The best composite design is the composite with fiber angle orientation of 45ᵒ/90ᵒ/-45ᵒ with a tensile stress value of 3.6 MPa and the smallest deformation of 0.0644 mm
PENGARUH DEBIT ALIRAN RESIN BISPHENOL A LP-1Q-EX PADA METODE VACUUM INFUSION RESIN TERHADAP KEKUATAN TARIK KOMPOSIT SERAT KULIT POHON WARU (HIBISCUS TILIACEUS)
Full text linkResearch on natural fiber composites is being carried out in various parts of the world to produce solutions to environmental problems by utilizing natural fiber materials prepared for environmentally friendly and renewable materials. The natural fiber currently being developed for composite reinforcement is hibiscus bark fiber. This study aims to determine the effect of the flow rate of bisphenol A resin LP-1Q-EX on the vacuum infusion resin method on the tensile strength of hibiscus bark fiber composites. The method used in this study is the fiber structure model in the direction of tensile load, composite using hibiscus bark fiber (Hibiscus tiliaceus), composite using bisphenol A resin LP-1Q-EX, composite using mass fraction with a ratio of 60 fibers: 40 resin, Waru tree bark was treated with 6% NaOH alkaline soaking (aquades 938.8 grams, and NaOH 61.2 grams) for 120 minutes, the number of hibiscus tiliaceus bark fibers in one composite material was 22 fibers with a material thickness of 3.2 mm (according to ASTM D638-03 Type 1 standard), the composite was produced using the vacuum infusion resin method with variations in resin flow rate of 1.19 ml/s, 3.66 ml/s, 4.67 ml/s. The testing process in this study is a composite tensile test using the ASTM D638-03 Type I standard. The analysis of the fractures that occur in each specimen uses macro photos, namely the process of taking several photos of the fracture after the specimen is subjected to a tensile test using a digital camera placed on the ground. topped a tripod. The results of the composite tensile test showed that the variation of resin flow rate of 1.19 ml/s had the lowest tensile strength of 282.94 MPa, while the variation of flow discharge of 3.66 ml/s had the highest tensile strength of 301.75 MPa. and the flow variation of 4.67 ml/s has a tensile strength of 284.54 MPa. Based on the results of the tensile test of the hibiscus tiliaceus bark fiber composite using the vacuum infusion resin method, the highest strength was obtained at a variation of the resin flow rate of 3.66 ml/s
Rancang Bangun Lengan Robot dengan Sistem Kontrol Otomatis dan Human Machine Interface untuk Mesin Operasional Industri Manufaktur
Full text linkDalam perkembangan dunia industri di era serba digitalisasi seperti saat ini, banyak sekali industri manufaktur yang menggunakan bantuan robot dalam proses produksinya. Hal ini dilakukan baik untuk perakitan antar komponen maupun hanya untuk memindah objek atau barang atau komponen dari satu tempat ke tempat yang lain. Dalam pengoperasiannya umumnya industri manufaktur menggunakan sistem PLC sebagai sistem pengendali yang disertai beberapa sensor pendukung seperti misalnya sensor gerak, sensor inframerah, dsb. Sehingga memungkinkan robot bekerja secara akurat dan punya kontinuitas mutu atau kehandalan yang tinggi. Pada studi ini diusulkan suatu rancangan lengan robot dengan sistem kendali berbasis PLC. Penggunaan Human Machine Interface juga menjadi fokus yang saling terkait. Hasil dari rancangan ini adalah suatu desain lengkap perpaduan antara komponen mekanik dan kontrol yang terintegrasi dalam desain lengan robot
PENGARUH PENAMBAHAN SERBUK ALUMINA (AL203) PADA RESIN POLYESTER BTQN 157 TERHADAP KEKUATAN IMPACT KOMPOSIT SERAT KULIT POHON WARU (HIBISCUS TILIACEUS)
Full text linkPenggunaan serat alam sebagai reinforcement pada material komposit semakin diminati pada satu dasawarsa terakhir ini. Hal ini disebabkan karena serat alam lebih ramah lingkungan ,memiliki densitas yang rendah, kompatibel dengan alam, dan harganya yang relatif murah. Salah satu penggunaan serat alam pada material komposit adalah serat kulit pohon waru (hibiscus tiliaceus). Kekuatan komposit serat kulit pohon waru (hibiscus tiliaceus) tidak hanya dipengaruhi oleh reinforcement dan komposisi antara serat-resin, akan tetapi juga dipengaruhi oleh jenis resin sintetis yang digunakan.Serbuk Alumina (Al2O3) adalah salah satu contoh material filler yang sering digunakan pada material komposit.Tujuan dari penelitian ini adalah mengetahui pengaruh penambahan serbuk alumina (Al2O3) terhadap energi impact yang diserap ,harga impact dan patahan komposit kulit pohon waru. Metode yang digunakan dalam penelitian ini adalah metode eksperimental.Dalam penelitian ini peneliti menginginkan pemanfaatan serat kulit pohon waru sebagai bahan alternatif penguat komposit. Dari hasil pengujian impact didapatkan energi yang diserap komposit serat kulit pohon waru (Hibiscus tiliaceus) variasi penambahan serbuk alumina metode vacumm infusion resin tertinggi pada variasi penambahan serbuk alumina 5 gram yaitu sebesar 10240,44 Joule. Dari hasil pengujian impact didapatkan harga impact komposit serat kulit pohon waru (Hibiscus tiliaceus) variasi penambahan serbuk alumina metode vacumm infusion resin tertinggi pada variasi penambahan serbuk alumina 10 gram yaitu sebesar 90,98 Joule/mm2. Pola Patahan pada komposit uji impact dari variasi penambahan sebuk alumina metode vacumm infusion resin menunjukan mekanisme fiber pull out pada variasi 7,5 gram dan delaminasi pada variasi 5 dan 10 gra
Pengaruh Temperatur Mesin Terhadap Kadar Emisi NOx pada Motor dengan Bahan Bakar Compressed Natural Gas (CNG)
Full text linkThe increase in NOx levels produced by CNG-fueled engines occurs when the fuel switches from gasoline to gas fuel (CNG). The author changed the otto 4 stroke gasoline engine, into a CNG-fueled motorbike and provided additional cooling in the form of a burst of air to the cylinder block. Changes in engine block temperature are detected using a temperature sensor placed on the engine oil. Bursts of air cooling result in temperature changes in engine oil. Changes in engine oil temperature are accompanied by changes in the resulting NOx emissions. This study shows that with a decrease in engine oil temperature in the combustion engine, NOx emission levels also decrease. From the research results it can be ignored that by providing additional air bursts will be able to reduce NOx emissions by up to 18